Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy.

Opals, associated with the zodiac sign Libra, are known for their emotional healing and creativity-boosting powers. Artists often use them to overcome creative blocks, while spiritual practitioners ...

A gemstone, billed as one of the largest gem-quality opals in existence, was sold for $143,750 at auction in Alaska on Sunday. For the latest headlines, follow our Google News channel online or via ...

Add Yahoo as a preferred source to see more of our stories on Google. German retailer Koroit Opal Company specializes in curating and selling Australian gemstones. Koroit is not just the company’s ...

People born in October can have one of two astrological signs: Libra (born between October 1 and 22) and Scorpio (born between 23 and 31). The marigold and cosmos also represent those born in October.

Analysis of data collected by NASA's Mars rover Curiosity has revealed that Martian craters are rich in opal rough. Researchers report that this opal indicates the presence of water on Mars, a finding ...

Traces of a colourful gemstone that was carried from Mars to Earth via a meteorite could be the evidence that there was once life on the Red Planet. Scientists from the University of Glasgow have been ...